Just wanna remind everyone that Grotto isle is somewhere around the center/north of EastBlue (if you know the OnePiece map). which is a LONG ways from the GrandLine

The currency of OnePiece is called Belli. 1 million belli is extremely hard to get on your own, specially if you steal from other pirates.

The Island - which I believe most of the islands is in OnePiece - is tropical and constantly that way.

There are such things as Sea Dragons and SeaSerpants, Mermen, weird chimera-like animals, and newspaper carrier large seagulls ^^

Most fruit powers in OnePiece are pretty original. Like the Rubber fruit and a fruit that makes you able to cut any which way into many different pieces and Not Die. However, if you're given a fruit, you can't swim. Fact, you'd sink like an anchor and not be able to move.

XD If I'm wrong about anything or get the spelling of something wrong, please IM or PM and correct me. =D